43results about How to "Save material and manpower" patented technology

The invention discloses an electromotor for realizing stator sealing and rotor opening ventilation manners by adopting axial flow ventilation. An adopted shaft is provided with an external circumference spiral groove and is matched with an axial flow fan with two ends clinging to each other and same spiral direction so as to form an axial flow combination ventilation device; the devices are arranged on the inner part of a rotor and two ends of the rotor so as not to occupy an extra motor axial space, so that the electromotor is compact in structure; due to different steering directions, the air flow direction is also different, but the motor can be cooled; by matching with labyrinth seal, a cooling manner combining stator seal type ventilation cooling with rotor open type ventilation cooling of the electromotor is realized, so that the stator insulation reliability and the rotor heat radiation capacity are ensured through the combined cooling manner, and the motor efficiency is improved; a stator cooling air flue is formed by (2x), (2h) and (6h); a rotor cooling air flue is formed by (5y), (9b), (4b) and (10b); the two cooling air flues are connected with each other in series and is jointly supplied with air pressure by the spiral combination device.

The invention provides automatic feeding equipment capable of storing aluminum pistons and a production method of the automatic feeding equipment, relates to the field of automatic feeding of aluminum pistons, and belongs to equipment capable of storing pistons well at a time and classifying and feeding the pistons step by step as well as a production method. The automatic feeding equipment comprises an equal divider (3) and a base (1), wherein the equal divider is mounted on the base; a material tray (16) is arranged above the equal divider, and equipped with a blank feature identification tooling; the blank feature identification tooling comprises a piston inner-cavity positioning block (11); a station distinction-detection tooling and a material existence detection tooling are arranged on two sides of the equal divider; and the station distinction-detection tooling comprises a station detection mounting arm (4), a station detection proximity switch (5) and a station detection block. The automatic feeding equipment provided by the invention has the positive effects that both material resources and the manpower are saved, the labor intensity is reduced, and the automated piston production is improved.

The invention is applicable to the technical field of substations, and provides a bidirectional DC power control system and method for substations. The system includes: a bidirectional converter module, used to send a disconnection signal to the control module when the grid is powered off; The input sends an instruction to start the nuclear capacity mode to the two-way converter module; the two-way converter module starts the emergency power supply mode, and sends the first discharge command to the battery power supply module, or sends the second discharge command to the battery power supply module in the nuclear capacity mode; the battery power supply The module outputs the first direct current according to the first discharge command, or outputs the second direct current according to the second discharge command, and the bidirectional converter module records the power information of the second direct current. The invention can provide emergency power supply, reduce the investment of uninterruptible power supply equipment, and at the same time, can automatically carry out nuclear capacity on the battery module, reduce manual operation, and save material resources and manpower.

The invention discloses a method for preserving arbuscular mycorrhizal fungi. The moisture in propagules of the arbuscular mycorrhizal fungi is fully reduced before cryopreservation of strains. The method comprises the following steps: ventilating and drying at normal temperature, and reducing the majority of moisture in a matrix material so that the moisture content is reduced to below 8%; and then reducing the moisture content in the propagules by utilizing silica gel drying in a glass dryer so that the moisture content of a matrix is reduced to below 5%. The moisture content of the propagule material is reduced by two steps so that the moisture content in arbuscular mycorrhizal fungi spores and mycelial cells is slowly reduced, thus being beneficial to maintain the vitality of the strains and simultaneously avoiding the damage of ice crystals to the cells during the rapid freezing. Through the experimental comparison, the activity of strains of the arbuscular mycorrhizal fungi can be effectively preserved. Compared with a pot culture inoculating method and an cryopreservation method, the method does not occupy a culture greenhouse, does not need the regular artificial inoculation and does not need a strain protection agent and a liquid nitrogen preservation material, the operation is simple, and the material resources and manpower are saved.